how to retrieve info from a bad disk?

[abdelkader belahcene <abelahcene@gmail.com>]

hi,
I have a disk ( I tera Bytes  it contains important data!!!)  formatted with nfts,
somebody used it in wind$   a virus  seems destroy "something" in partition table  ???

Now no access is possible, although the partition is recognized as /dev/sdb1  with correct sie, but no possibility to
retive files.
I tried   ntfs-3g    /dev/sdb1  t         gave   segmentaion fault
I tried  testdisk        it   analysed the disk and gathered the data,   I tried to list the files ,    it gave same error as ntfs-3g, I mean  segmentation fault??


Is there  another rescue software ??
thanks for help

regards